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These discussion prompts cover the basics of radioactive decay and carbon-14 dating, as well as concepts related to climate change.

Students will search the Science News archive for stories related to frozen mosses, radioactive carbon-14 dating and global warming.

Students will answer questions about how scientists measure the age of newly thawed mosses in the Arctic, and the implications of those scientists' findings.

To better understand the life cycle of stars, students will estimate the conditions involved in stars and element formation.

These discussion prompts cover the principles of spectroscopy, stellar evolution and fusion reactions.

Students will search the Science News archive for other stories on neutron star collisions and gravitational waves.

Students will answer questions related to the Science News article "Neutron star crash seen for the first time."

Students will construct their own simple solenoids and conduct experiments to measure the solenoids' properties.

These discussion prompts cover topics related to materials science, magnetism, and biological adaptation and self-assembly.

Students will answer questions about how a cubic metallic robot wraps itself in different exoskeletons to perform different functions.

These discussion prompts cover chloropasts, chlorophyll, photosynthesis and related reactions, and solar cells.

Students will search the Science News archive for stories about photosynthesis and plant roots.